Printing-telegraph system



Dec.19, 1922. 1,438,961..

A. E. LUNDELL.

PRINTING TELEGRAPH SYSTEM.

FILED MAR. 25. 1918. 2 SHEETS-SHEEI I.

- Al /y,

Dec. 19, 1922.

A. E. LUNDELL. PRINTING TELEGRAPH SYSTEM.

2 SHEETS-SHEET 2.

FILED MAR. 25- 1918.

J: mi aim: EN

,50 incide in pointof tinie with tl Patented Dec. 19, 1922..

unit so STATES:

f essee Pics,

ALBEN n. L HDELL, OFNEWJ'YORK, N. 1 lasers-non ro WES- sauELECTRICCOMEANY, mcosrone'rnn, on NEW YORK, N. A CORPORATIQLTJIDFNEWYORK.

PRINTING-TELEGRAEPH SYSTEM;

To all ,w 7mm it may comcvm:

Belt known that I, liLsnN E. LUNnnLL, a

citizen of the United States, resicli-ngat New York, in the countyoiBronx; StateofNew 5 York, have-inventei'l certain new and useful aImprovements 1n Rr nt ng-Telegraph bys terns, oit' which the followingis a, full, clear,

concise, and exact description.

This invention relates to printing tele- 10 graph. systemsancl has forits object to. pr0= videasystein in which a largenumberof mechanismsmaybe actuated selectively. al-. though the line transmits only a smallnumber ()flIIlPlllSQS persignal.

The invention compr ses a system. in

v which there 15] a transmitting and receiving station connected by twoormo-re l1ne wlres. At the. t *ansnntt ng en .i. ,ineuns are provicieclto transmit impulses over the. line. The

cuits aml are adapted successivel to close a.

plurality oi break points that the ultimate effectof the operation oftllfiSQlBCi'lll rela s l i I by the particularsignal combination isuthata circuit is closed to energize a desireclmechzinisin 1n the receiver.Ii, ior cxan' ple, it s.

necessary to operate a certa in lll'llnbQrillElfC- lays to close adesired circuit, these relays are energized and locked up, one aii'teran other, due to the sequential and variable 0p-,

40 oration of the line relay contact lilGlIlbGlS.

In order to cause the periods 01" current and no-current on thevariouslines to over:-

lap, one line with respect to another.)-line,tl1is system provides meansFor sending: long and oi unidirectional currents, im-

short imputpresseil on each line. in various combinations in addition111921118 are provided so thatthe bcginnirur orendinp; oil theimpression oi ai combination on one line, may. or may not 00 ending ofthe impression of the same or another combination on another line, thevar1- ous combinations oi nnpuls 5, however, 11npresseil on the lines(luring a given interval 10 beginning or:

citime, resultingin the operation of aide: siretlanechanisin.

As a result, therefore, oi this overlapof fi s nal udb ut i d pende ee Qh lec ng. e yfii w t part cu ar ct off-the. operationjoi-i one ot'saicline re-. ays ep nd 1 1 he at re he ct s i of-the tether line relaysduring the same in: terval of'tiine; 1

The invention isillustrateclin the drawings, o.f whiohltigs. 1.;anct2represent the (liagran ma tic arrangement of thE C-lF'CHllLS and;apparatus en p loye cl in thisisystem the. circui Wires o t Fig. 1continuing tothe right into 2 Thatpart; of Fug" 1 to the. left oi the dot o nd clash line i represents the trans; initting encl of the 7 systemand, ,that part to, the right oif saiql. line a. .portion o fi thereceive ingencl of the. system. Fig.3.is atable, the. respective columnsof Q which represent tolunin 2.Selecting relays to he ultimate: 1ylocked 2H1).

Column 3 Selecting relays not .to be locked up. i

tolumn, 4Signals in upper line; signals in lower line, tolun ni 5-O1Kl8ro1? operationoif rel: ys to loc] up those incolunnrQ;

. i ill-ust uteri v the, s I ten comprises. two

line Wires 1 and 2, the circuitsho f which at p the transmitting end,are closed biy switches,

sand .3, operated :respectivelyby can s 6 and 5, These cams a; operatedsimultaneously by they 7. The transmitter.coinprisesai plurality of p;"rsrof SUClMCHJI-IS' operated by keys. Each; pair. of ca ms is; adaptedto trans: Hill, atlifferentsign l to; the line. The. sury facesofthese m-e cut so asto operate their respective switches to;:transn1itthe (lee.sirecl combination s of iinpulses'over the lines. The; cuttings on. one,disk are angularly placed, with respect. to those. on the other disksothat thesignals are. impressed on the linesin their proper relativesequence. The

cuttings shown are designed to impress a sig- 100 nal on the linewhichwill effect the, actuation of mechanism 244:. This. signal .on. each,line comprises two long impulses with a short one intervening, thesecombinations being.

impressed ontheir respective lines inthe1 5 sequential relation shown inFig. 8; Aipair o'f cams 1s provlcletl tQrUe-ach character key.

At the other encl of line, Wires 1 and 2 are lays will best becomprehended by a description of the operation of the device. We willassume that it is desired to actuate mechanism 244, which operationrequires the transmission of certain combinations of impulses over theline wires. The particular combination desired is shown 1n Fig. 3 and iscut out on the cams shown in Fig. 1. This signal is composed of twolong. impulses with an intervening short impulse impressed'on each linewire, and, as shown in- Fig. 8, the combination is impressed on line 2first, closely followed by its impression on line 1.

On Figs. 1 and 2, the circuit for mechanism 244, which it is desired toclose, is indicated by heavy lines merelyfor the purpose of facilitatingthe inspection. of this circuit during the description. It extends asfollows :from ground through lower armature and back contact of relay S,through lower armature and back contact of relay M, through upperarmature and front contact of relay L, through upper armature and backcontact of relay K, through upper armature and front contact of relay N,through upper armature and front contact of relay G, through upperarmature and front contact of relay G,

through lower armature and back contact of relay 75, through mechanism24%, through lower armature and back contact of relay 76, to battery.Since the circuits on the drawings are shown in their normal position,it is evident that, to close the circuit just de scribed, the relays L,N, C and G must be looked up, The manner in which this is accomplishedis as follows :As key v7 is depressed, cam 5 closes its switch 3 toimpress a long impulse on theline 2 and later during the maintenance ofwhich, switch 4 is closed to impress a similar impulse on line 1. Thislong impulse on line 2 energizes line relay 11 which pulls up andenergizes relays T and 30, through a back contact of armature 8, thearmature 8 at this time being in a retracted position. However,inimediately thereafter, and while the armature of relay 11 is stillpulled up, a long pulse is impressed on line 1 which causes the armatureof relay 10 to pull up and take battery oil" relays T and30 andenergizes relay over the following circuit battery, upper armature andfront contact of relay 10, relay Y. upper armature and back contact ofrelay S, front contact and armature of relay 11 to ground. Relay Y locksup through its lower armature and contact,

energized by the action of an actuating magnet PM which will behereinafter described. The next change which occurs in the system is thebreaking of the circuit of wire 2 for an instant. This break causes thearmature of relay 11 to retract, putting battery on re lay It over thefollowing circuit: ground, armature and back contact of relay 11,winding of relay R, front contact and upper armature of relay 10 tobattery. Referring to F ig. 3, it will be noted that this break in line2 is of very short duration, but of sufficient length of time for relayR to cause relay B to be energized over the following circuit: battery,lower armature and front contact of relay it, upper armature and frontcontact of relay Y (which is locked up through relay KD), lower armatureand back contact of relay D, winding of relay B to ground. Relays B andD lock up over the following circuit: ground, winding, front contact andinner armature of relay B, winding of relay D, winding of relay D, wire13, wire 12, to battery at relay KD. Line wire 2 is immediately closedto take off battery at relay R. Relay D being locked up, puts battery onrelay L over the following circuit: battery, upper armature, frontcontact of relay D, winding of relay L, back contact and lower armatureof relay G to ground. Line circuit 2 is again broken momentarily,the'eflect of which is to put battery on relay F over the followingcircuit: battery, lower armature and front contact of relay R, upperarmature and front contact of relay if (which is locked up) lowerarniature and front contact of relay D- (which is locked up), upperarmature and back contact of relay H, winding of relay F to ground. Line2 is closed again, pulling up relay 11, thereby deenergjizing relay Rwhich removes the battery at R from the circuit of relay F, whereuponrelays F and H, having previously pulled up, look up over the followingcircuit: ground, winding of relay F, lower armature and front contact ofsaid relay, winding of relay H, wire 13, wire 12, to battery at KD. Whenrelay H locks up it puts battery on relay N over the following circuit:battery, lower armature and a front contact of relay H, wire 14:,winding of relay N, back contact and upper armature of relay C, toground. Relay N locks up through its own winding andlower armature, wire17, wire 13, wire 12 to battery at KD. Relay P is likewise energized,when relav l'l'locks up, over the following circuit: battery. lowerarmature and the other front contact of relay H, winding of relay P.wire 15 to ground at lower armature of'relay G.

Relays P and P loclcoventhe following circuit: ground, upper armatureand front con tact of relay P, winding-of relay P, wires 16, 17, 13and12 tobattery at KD. Itis to be born'ein inind thatthe relay 10' hasbeen maintained energized=all this time, during the above describedoperation ofrelay 11. while the following operations occur, dueto theaction of relay 10.

Line circuit-1 is broken for an instant,

causing armature 8 toretract, energizing relay T over the followingcircuit: 'battery, armature and back contact of'relay 10, relay 30,relay T, front contact and armature of relay 1l to ground; Relay A isthereby en: ergized over the following circuit: from ground, lowerarmature and contact of relay T, upper" armature and front I contact of'relay X (which has beeirpreviously locked up as described), lowerarmature and back con tact ofrelay (I, winding ofrelay A3, wires 16,.17,- 13 and 12, to battery at KD, hen relay A energizes, a circuitisprepared to lock up relays A and C, throng-hi upper armature and frontcontact ofrelay A, winding of relay C to ground. Relay 10 pulls up foian instant, deenergizing'relay T, thereby re moving ground at relay T,and consequently the short on relay C which thereupon pulls up and-locksup, as above noted,putt-1ng ground on relay through the upper arma tureof relayCJ Relay 10"breaksagain, energizing relay T. This closesacircuit for relay E as follows; grounth'lower armature and frontcontactofrelay T, upper armature and front. contact of relay X, lowerarn'iature and front contact ofrelay Q, upper armature and'back contactof relay G, winding of relay E,- wires 16, 17, 13 and 12 to battery atK11. W hen E energizes, acir cuit is prepared tolock up E and G throughlower armature of E to ground through G. Relay 1O pulls up, removing theshort circuit from relay E at Ti Therefore, relay. E locks up oyer thefollowing circuit; ground,

winding of relay G, lower armature and front contact of relay E, wires16,17, 13 and 12 to battery at Kl); Relayl} pulls-up and closes thefollowing circuit: ground, lower armature and a front contact of relay(l, windings of relays G, G, G"to battery. It will be noted that thebreaks in the circuit to mechanism flela have all been closed andthatthose relays, the energizat'ion of which controls these breaks,,-arelocked up to battery at KD. Relay, 11 breaks, after which relay 10breaks. The only operation which remains to be performed -.is that ofactuating the selected mechanism, which is accomplished in the mannerhereinafter described. Actuating magnet PM is provided, the windings ofwlnchzare connected To the back contacts of the. line relay arinaturesS. I and 9 so that whenever both: of thesearma- Relay 1.1 nowrem-tainsenergized tures are on their backcontacts atthe same instantthe magnet PM is actuated. The character and sequence ofthe combinationsof impulses is so arranged, however, that this does notoccur until theend ofthe signal. The fact that one line relay is always energized whilethe other is breaking, there fore, not only promotes rthe errtension ofany given. circuit but-prevents the effective actuation of magnet PM.When both armatures 8 and 9 are retracted the following circuit isclosed: froinbattery, armature and a back contact of relay 10, windingof actuator magnet PM, front contact and lower armature ofrelay X (whichis locked), wire 18, back contact and armature of relay 11, to

. 'roundi This ma net PM is then actuated 3 6 andecooperates with theselected mechanism 24% to" print a character orto. perform any oftheother functions incident to printing and at thesame time closes anoperating circuit for clear-out relay Kl) which opens the holdingcircuits as previously described.

For the purpose of setting forth the 011- erationof certain otherrelays, the .operation of the device to select mechanism 256 will nextbe described. The selection of this mechanism requires the impression onthe lines of signal combinations of the character and in the ordershownin Fig; 3. Reading from the right hand of Fig. 2 to. the left through Fil, the circuit which must he established to select mechanism 256 is asfollows: from batter throu 'h uner armature and front contact of relay96, mechanism 256, front contact and upper armature of re-.

lay 95, front contact and inner. armatureot:

relay (1 front contact, and outer upper armature. of relay P, frontcontact and lower. armature of relay 1, front. contact armature of relayB, upper armature and back contact ofrelay Y, winding ofrelay 31, awinding of relay bl to ground. Relay 31,- thereupon closes the followingcircuit from ground and lower armature of relay 3110 wire 22, wire 23,throiiigh relays 2G, 36, e6, 58, 66,76, 86, 96, 106, 115, to battery 2%.Relay 31 locksup through itslowerarmature, wires 13 and 12, to batteryat relay T ll).

Relay 11 isthen energized, closing a circuit through relay Y as follows:ground, armature 9, andfront contact of relay 11,

upper armature of relay S, winding of relay Y, to armature 8 andbattery. Y locks up through X as follows: lower armature and winding ofY, winding of X, wire 12 to battery at relay KD. X then pulls up. Relay10 then breaks for an instant, putting battery on T as follows: battery,armature 8, relay 30, relay T, front contact and armature of'relayll toground. T closes a circuit for relay A as follows: lower armature of T,outer armature and front contact of relay X, lower armature and backcontact of relay C, relay A, wires 16, 17, 13 and12 to battery at relayKl). A pulls up and prepares acircuit for the operation of relay C,which, however, does not operate at this time because it isshort-circuited at the lower contact of relay T. Immediately thereafter,however, line relay 1O pulls up opening the circuit of T at its backcontact, and locking up relays C and A through the following circuits:ground at C, winding of G, upper armature of A, through A, and so on tobattery at KD as; before. When C energizes it pulls up both itsarmatures. Through: its lower armature it prepares a circuit for relayE. Through one of its front contacts and upper armature it actuatesrelay I over the following circuit: ground, upper armature of C andfront contact, winding of I, back contact and upper armature of relay Dto battery. Relay 1 and. I then look up over the following circuit 2:ground, lower armature of 1, wind- 'ing of I, to I, wires 16, 17, 13 and12 to battery at relay KD. At another front contact, C closes thefollowing circuit: ground, upper armature and front contact of C, wire19, wire 20, winding of; K to lower armature, back contact of H, to battery. K locks up with ground through its lower armature, through K, towires 16, 17, 13 and 12 to battery at KD. Relay C through wire 19 alsolocks up relay C.

Relay 11 next deenergizes, causing armature 9 to retract for an instant,during which time relay R is energized over the following circuit:ground, armature 9 and back contact ofrelay 11, relay R, front contactand armature of relay 10 to battery. Relay B energizes over thefollowing circuit: battery, lower armature of R, upper armature andfront contact of Y, lower armature and back contact of D, relay 1% toground. Relay 11 pulls up, deenergizing relay R. Relay B will be lockedup from ground, relay 13, upper armature of B, relay D, relay D, to wire13, to battery at relay KD. D pulls up and energizes L over thefollowing circuit: battery, upper armature and front contact of D, relayL,

to ground on lower armature of G. L locks up through its'lower armatureto wire 13 to batteryat relay Kl). Relay 11 breaks again and F isenergized over the following circuit: battery, lower armature of R,upper armature and front contact of Y, lower armature and front contactof D, upper armature and back contact of H to T and ground. When F pullsup, a circuit is prepared, which, when R is subsequently deenergized,becomes effective and locks F as follows: ground, winding of F, lowerarmature of F, relay H, to wire 13 and battery at relay KD, I

' Relay 10 next drops off for an instant, energizing T, which causes theenergization of E over the following circuit: ground, lower armature ofT, outer armature and front contact of X, lower armature and front backcontact of G, relay wires 16, 17, 13 and 12, to battery, at relay KD,When E pulls up a circuit containing ground is prepared for E to lockup, but this does not become effective until relay 1O pulls up, which itdoes immediately, thereby deenergizing T and removing the short circuitwhich allows E to lock up over the following circuit: ground, relay G,relay E, to wires 16, 17, to battery at KD as before. G pulls up and putground and battery on G, G, and G, through the lower armature of G.

Relay 10 deenergizes, relay 11 remaining energized, causing theenergization of relay 30, over the following circuit: battery armatureS, relay 30, relay T, upper armature of T, lower armature of KD toground. Relay 30, therefore, remains locked up until relay KD breaks thecircuit of relay 30 at its lower armature. Relay 30, operating, putsground on37, and completes an operating circuit to battery 89 for relays25, 35,,

i5, 55, 55, 75, e5, 95, 105, 115; At this time relays 95 and 96 as abovedescribed ener gized and locked up, thereby completing the circuit tothe selected mechanism 256. Immediately thereafter relay 11 isdeenergized, completing the following circuit: from battery at armature8, through PM. tor-front contact and inner armature of X to back contactand armature 9 of relay 11 to ground. Relay PM therefore energizes andcooperates with the desired mechanism to perform their functions and atthe same time through its armature energizes Kl) to break circuit ofbattery at KD and at its lower armature the holding circuit for relay 30just described, thus clearing out all the apparatus,' which returns tonormal position.

contact of C, up er armature andmessage impulses, a receiver connectedwith said line conductors comprising a plurality of printing magnetsselectively responsive to said impulses, a single relay in each of theline conductors responsive to the operation of said means and dependentupon the respective order and relative duration ofthe impulses in therespective lines for selecting one of said printing magnets, and anactuating magnet energized only when said line relays are deenergized atthe end of the signal combination for causing the operation of theselected printing magnet.

2. In a printing telegraph system, a pair of lines, means fortransmitting combina tions of impulses over said lines, a receiverassociated With said lines comprising a plurality of printing magnets, aplurality of interdependent electromagnetic de ices, circuit connectionscompleted by said devices for actuating said printing magnetsselectively, a single relay associated with said lines and actuated bysaid combinations of impulses to operate said selective devices, theselective devices actuated by the operation of one of said line relaysduring a given interval of time being dependent upon the character ofthe actuation of the other line relays during the same interval oi time.

3. In a printing telegraph system, a pair of line conductors,transmitting means for impressing message impulses on said lineconductors, a single relay in each of said line conductors responsive tothe operation at the transmitting means in accordance with therespective order and relative duration of the impulses in the two lineconductors, a receiver comprising a plurality of printing magnets and aplurality of relays intermediate said line relays and energized upon theoperation thereof in a predetermined order for controlling theenergization of one of said printing magnets.

i. in a printing telegraph system, a plurality of selecting circuit foreach of said printing magnets, said circuits containing a plurality ofbreak-points, a plurality of selecting relays for closing saidbreak-points, a p1uralit v or lines, means for transmitting combinationsof impulses over said lines, a line relay in each of said lines, anarmature controiled by each of said line relays, said armatures beingconnected with the circuits of said selected relay and operatedby suchcombinations of impulses to close the breakpoints in a circuit leadingto the printing magnet selected, an actuating magnet for said printingmagnets energized only When the armatures of said line relays are allretracted at the end of the signal combination.

in witness whereof, I hereunto subscribe my name this 19th day of MarchA. 1)., 1918.

ileen E. LUNDELL.

printing magnets to be selected, a

